Fountain pen



u 1938- w. A. DUSENBURY, SR 2,128,456

[FOUNTAIN PEN 7 Filed Jan; 2, 1957 INVENTOR. Wan 1?. DmsmBweY 5E.

ATTORNEY.

Patented Aug. 30, 1938 UNITED srArEjs "FAT My invention relates to 'a-"new and useful im-' provement in a writing pen and particularly to a fountain pen. In-the use of pens variouspe'rsons are accustomed to assert various pressures upon the pens so that no individual pen is accommodated to the use ofseveral persons. The

result-is that the pen'fre'quently becomes 'damaged and writes poorlyf Moreove'r, in the use of a pen, a person who is, accustomed to press heavily on the writing instrument will cause the pen to write widely and consequently, mar the appearance of the writing. It has been found also that a yieldable point renders writing less fatiguing.

It is an object of the present invention to provide a fountain pen of this class so arranged and constructed that its point will yieldably resist the pressure exerted upon it, yet upon the exertion of excess pressure move readily inwardly of the holder.

It is another objectof the present invention to provide a pen of this class which will be simple I shank but will not be brought into engagement in structure, economical of manufacture, durable, and highly efficient in use.

Another object of the invention is the provision of a fountain pen with an ink containing reservoir so constructed and arranged as to be moveable axially of the pen holder when the pen is used for writing purposes.

Another object of the invention is the provision of a yieldable member for engaging the pen holding shank and permitting axial movement of the same within certain limits.

Other objects will appear hereinafter.

The invention consists in the combination and arrangement of parts hereinafter described and claimed.

The invention will be best understood by a reference to the accompanying drawing which forms a part of this specification and in which,

Fig. 1 is a side elevational view of the'invention of a pen embodying the invention with parts removed and parts broken away and shown in sections.

Fig. 2 is a fragmentary longitudinal sectional view showing the invention applied.

Fig. 3 is a sectional view taken on line 3-3 of Fig. 2.

Fig. 4 is a view similar to Fig, 2, showing a difierent type of yieldable member.

In the drawing I have illustrated the invention applied to a fountain pen embodying the holder 9 which is formed hollow for receiving the ink reservoir I!) which is attached at one end to the pen holding shank II. This pen holding shank shoulder I9.

is provided witha passage I2 which opensat the top of thefeeding point l3 of the shank-to deliverdnk'fto the pen pfo'int I4, Formed on the shank is a peripheral collar jl5', this collar be ing locatedfl betweenfits ends. Embracing the shank inwardlyor'rearwardlyjof the collar I 5, is

a yieldable sleeve l6 formed from rubberj'or the like one end of which engagesthelwasher l1 wh ichj rests iagainstfthe end "ofjthe hol'd er 9. *The'other end of the sleeve l6 engages the washer l8 which rests against the inner face of the collar 15. The outer face of the collar I5 is engaged by the shoulder l 9-formed on the retaining sleeve 20 which'is threaded onto the end of the holder 9. A passage 2| is formed through the with the end of the holder. Consequently, with this inward movement, the reservoir. is not collapsible. This sleeve I6 is formed from sufficiently yieldable material ,to afford a light floating point which will yield under pressure and afford a smooth writing pen which will relieve the user of fatigue present in a rigid point pen. When the inwardv pressure is released, the member I6 will, of course, press the collar l5 outwardly so that it normally rests in engagement with the The passage 2| is axially directed and is not inclined and the-portion 22 of the shank is of such a diameter as to freely slide in the passage 2| while, at the same time, a tilting of the shank to any appreciable extent is provided.

In Fig. 4 I have shown the same construction as in Fig. 2, excepting that the sleeve I6 is supplanted by a coil spring l6. This spring, of course, will be selected so that the proper tension will be present.

With a pen constructed in this manner, the diificulties referred to are avoided and the ad-. vantages enumerated are attained.

While I have illustrated and described the preferred form of construction, I do not wish to limit myself to the precise details of structure shown, but desire to avail myself of such variations and modifications as may come with the scope of the appended claims.

Having thus described. my invention what I claim is new and desire to secure by Letters Patent is:

1. A pen of the class described, comprising: a hollow holder; an ink reservoir insertable into said holder; a pen holding member attached at its inner end tothe end of said reservoir; a pen point mounted on said holding member, said holding member serving for conducting liquid from said reservoir to said pen point; a retaining member secured to the end of said holder and embracing said holding member, said holding member projecting therethrough and being freely slidable longitudinally thereof; a peripheral projection on said holding member; and a yieldable member engaging at one end, said peripheral projection and at its other end the end of said holder for normally resisting axial movement of said holding member relatively to said holder, said reservoir moving in unison with said holding member and projecting inwardly of said hollow holder beyond said yieldable member; I

2. A pen of the class described, comprisingza hollow holder; anink reservoir insertableinto saidholder; a pen holding member attached at its inner endto the end of said reservoir; a pen point mounted on said holding member, said holding member serving for conducting liquid from said resevoir to said pen point; a retaining member mounted on .said hollow -holder,-isaidholding member slidably .projectingethrough said retaining member. and being Ifreely slidable longitudinallythereofi and yieldable means ,enclosed by r said retainer and said holder for resisting inward movement of said holding member relatively to said holder and compressible for varying the resistance thereof in proportion to the pressure exerted on the pen point in a writing operation.

3. A pen of the class described, comprising: a hollow holder; an ink reservoir open at one end and insertable into said holder from one end thereof, the open end of said reservoir being faced outwardly; a pen holding member; a pen mounted on said pen holding member, said pen holding member being connected at one end to the open end of said reservoir for conducting ink there- 'from to said pen point; a retaining member mounted on the end of said holder, said pen holding member projecting through said retaining member and being permanently projected out- .wardly from the forward end thereof for retaining the pen positioned exteriorly thereof, said pen holding member being longitudinally slidable inwardly and outwardly of said holder; and aryieldable member operating on said pen holding mem- -ber for normally maintaining the same thrust outwardly its maximum :distance of outward movement and yielding under varyingpressures exerted onlsaid pen, pointin awriting operation forpermitting the, novement of said pen hold- ;ingflmember inwardly of said hollow holder.

, WAnnA-DUsENBURY, SR. 

